Definition: You are given a question on human aging. You are also given 4 answer options (associated with "A", "B", "C", "D"), out of which only one is correct. You need to answer the question by selecting the correct option. You should only answer with the choice letter, not the whole answer.
Input: The houses of the future may allow you to operate virtually everything in the house from a central terminal; such a house is already in production and is referred to as
(A)Technohouse (B)Compuhouse (C)Futurehouse (D)Smarthouse

D